JP2003123433A - Recording tape cartridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a recording tape cartridge which enables a shielding member capable of miniaturizing the storage space therefor in a drive device to open/ close an aperture, which has such constitution that the route for pulling out a recording tape can be made shortest, without interfering with a reel and a leader member. SOLUTION: A corner part on the loading side to a drive device of a recording tape cartridge 10 is cut to form an aperture 20 inclined in the direction of an arrow A, and a leader pin 22 and a magnetic tape 14 are led out from the aperture 20 facing in the direction of the arrow A and the direction of an arrow B through the shortest route. When opening/closing the aperture 20, a door 30 is slid between a position where it closes the aperture 20 inclined in the direction of the arrow A from the inside and a position where it is placed approximately in parallel with peripheral walls 16A and 18A of a case 12, which are extended in the direction of the arrow A, to open the aperture 20, while rotating so as to pass around the outsides of a pin base 26 and the reel.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention
A single reel wrapped with a recording tape is rotatably accommodated.
The present invention relates to a recording tape cartridge. [0002] Magnetism is used as an external recording medium for computers and the like.
Recording tape such as air tape is used. This record
The storage space for storage is small and large capacity
A single reel wrapped with recording tape on which information can be recorded
Recording tape cartridges are used.
The In the case of this recording tape cartridge,
An opening is formed, and the recording tape is pulled from this opening.
Take up the take-up reel on the take-out drive side
It has become. Then, dust or the like enters through the opening and
Various devices have been made in the past so as not to adhere to the loop.
ing. A recording tape cartridge 10 shown in FIG.
0, side wall 102A of case 102 (case loading A direction
An opening 104 is formed in a side wall along the direction. this
The opening 104 is a door 10 that slides along the loading direction.
6 is opened and closed. However, at the position of the opening 104, recording is performed.
Leader attached to end of magnetic tape T, which is a tape
Drive device side for pulling out the leader pin 108 as a member
The operating member turns around from the side of the case 102 and
It is necessary to pull out the dapin 108. For this reason, the operation unit
There must be enough space around the drive device
In addition, the mechanism around the operating member becomes complicated.
As a result, the drive device is inevitably enlarged. In addition, another
From the viewpoint of the magnetic tape, the take-up reel 110 is magnetic tape.
The lead-out path of T becomes long. On the other hand, the recording tape cartridge shown in FIG.
114, the front wall 114A of the case 114 (the case
An opening 116 is formed in the front wall facing the direction of loading A).
The The opening 116 is a rotary door that opens and closes around a support shaft.
It is the structure opened and closed by the door 118. In this recording tape cartridge 112,
Since the opening 116 is formed in the front wall 114A,
The operation member on the live device side turns around from the side to
There is no need to pull out the loop T, but the door 118
The door 118 opens and closes on the drive device side.
You have to reserve space so as not to disturb the operation
Absent. This increases the size of the drive device. Further, the recording tape cartridge shown in FIG.
In the wedge 120, the corners of the case 122 are notched and opened.
124, and the ends of the magnetic tape T are connected to each other.
The opening 124 is directly formed by the leader block 126 which is a dab member
It is configured to open and close. However, the leader block 126 has the opening 12.
If it only functions as a door that closes 4,
There is no problem if scratches or dirt occur on the
The lock 126 is pulled out to the operation member as it is and is dry.
Is engaged with the hub 130 of the take-up reel 128 on the device side.
It is a configuration. For this reason, the reader block 126 is scratched or soiled.
If this occurs, the hub 130 does not fit well and the magnetic tape
There is a risk of adversely affecting the running of the machine T. Also reader
Part of the winding surface on which the block 126 winds the magnetic tape T
To form the magnetic tape T due to the above scratches and dirt.
The recorded data may be damaged or the unrecordable area may occur.
is there. Further, the leader block 126 has an opening 12.
4 because it is only locked to the edge of
If it falls, it may come off.
The 126 is larger than the leader pin
Therefore, there are many restrictions on the shape of the case 122. The present invention considers the above facts.
In consideration of the configuration, the recording tape can be pulled out as short as possible.
The opening of the drive unit can be made smaller in storage space
Without interfering with the reel and the reader member
A driver that can be opened and closed and that opens and closes the opening by operating the shielding member.
The opening / closing means on the eve device side can have a simple structure.
The object is to obtain a recording tape cartridge. [0012] In order to achieve the above object,
The recording tape cartridge according to claim 1
Makes it possible to rotate a single reel wound with recording tape
Rectangular case to be accommodated and drive device for said case
The recording tape is formed by cutting out the corner on the loading side
Opening for pulling out the leader member attached to the end of the
And provided in the case, when the recording tape is not used
The opening is closed from the inside and the recording tape is used
When opening, the opening is arranged substantially parallel to the side wall of the case.
And a shielding member that opens. A recording tape cartridge according to claim 1
Is opened by a shielding member when the recording tape is not in use.
Is blocked from the inside to prevent dust from entering the case
Is done. As a result, the reel housed in the case
Dust is prevented from adhering to the recording tape wound around
The On the other hand, when using a recording tape,
The shielding member is separated from the side wall of the case by the opening / closing means of the eve device.
It moves to a position that is aligned in parallel, and the opening is opened.
The leader member is pulled out from Leader member is drive
It is guided to the take-up reel by the drawing means of the device, and the recording tape
The loop is sequentially wound from the case while being wound around the take-up reel.
Record drawn and placed along a predetermined tape path
Information is recorded and reproduced by a reproducing head or the like. Here, the opening is the loading side of the rectangular case
Since the corner is cut out, the open surface is the case
Loading direction to the drive device and orthogonal to the loading direction
(Open surface is inclined with respect to the loading direction)
doing). In other words, whether the drawing means is on the loading direction side.
From the direction perpendicular to the loading direction or the corner direction (up
Access the leader member from the direction that intersects the inclined direction)
it can. For this reason, the process for drawing out the recording tape
The drive device with the shortest path can be designed.
In addition, the drawing means goes around and chucks the leader member.
No need for a drive mechanism
A drive device can be designed. Also, the shielding member is in the loading direction.
Position to close the opening formed at an angle from the inside, and above
Along the loading direction with the end of the inclined opening as the base end
A position where the opening is opened in parallel with the side wall of the case.
To open and close the opening. In other words, the shielding member
From the state inclined with respect to the loading direction
Changing direction to a state substantially parallel to (continuous or intermittent)
Rotating) or after changing direction (rotating)
And then wrap around the outside of the leader member and reel.
In this way, from the loading side to the drive unit of the case to the rear
Move toward to open the opening, move in the opposite direction to open the opening
Occlude. For this reason, the shielding member is an excessive member for opening and closing the opening.
The case is more than the notch where the opening of the case is formed.
In the drive unit
The storage space for the recording tape cartridge is small. Ma
In addition, the movement path of the shielding member
There is no interference. Furthermore, the opening / closing means of the drive device is shielded.
Installation to operate the member from the front side of the case (top side in the loading direction)
Operation to load the case into the drive as well as the meter
(Relative movement between the case and drive unit)
Design to open the opening by moving the material backward
And the structure is simplified. Thus, the recording tape cassette according to claim 1 is provided.
In the cartridge, the recording tape pull-out path should be as short as possible.
Can be configured to reduce the storage space in the drive unit.
Shielding member that can be molded interferes with reel and reader member
Can be opened and closed without any problem, and the opening is opened and closed by operating the shielding member.
The opening and closing means on the drive device side
Can do. Also, the recording tape is pulled out as described above.
If the path for recording is made the shortest, the path of the recording tape is inevitable
To reduce contact wear with the tape guide.
Can. Open the case by cutting out the corners.
By forming the mouth, as described above, to the leader member of the drawer means
Because the range of access direction of
The installation position of the leader member is expanded, and the drive device is installed.
Measurement flexibility is improved. And the shielding member moves as described above.
Therefore, the position where the leader member can be installed depends on the shielding member.
Can be affected (the possible installation position is narrowed)
Absent. Further, the shielding member is pulled out from the case.
It is provided separately from the leader member to be removed from the case
Design that does not come off easily due to drop impact.
can do. On the other hand, the leader member is
When not in use, the case where the opening is closed by the shielding member
It is stored in the storage space, and it is difficult to get scratches and dirt. others
Therefore, it can be used to pull out and run the recording tape in the drive unit.
There is no effect, and the recording tape itself is not damaged. The shielding member according to claim 1 is a door.
A, door, lid, shutter, guard panel, etc.
The generic name of the member which can close opening. Also, the recording tape cartridge having the above-described configuration.
At the top when the drive device of the shielding member is loaded
The opening / closing member (opening / closing means) of the drive device
It is good also as a structure which provided the contact part which touches. In this configuration
The recording tape cartridge is loaded into the drive device.
As a result, the shielding member moves relative to the back of the case and opens.
Open / close means on the drive device side is simply
Abuts the shielding member that changes its posture during the opening process
If it is possible to follow this in the
Is done. Furthermore, the recording tape cartridge having the above-described configuration is used.
In the wedge, the shielding member closes the opening from the inside.
And open the opening in parallel with the side wall of the case.
It is good also as a structure which moves, changing a direction between devices.
In this configuration, the shielding member has a closed position and an open position of the opening.
(Turning continuously or intermittently)
Move) and do not protrude from the outer area of the case.
The opening can be opened and closed. For this reason, the recording tape in the drive device is
Notch with an opening for the loop cartridge (case)
The parts on the drive device side (for example,
In this case, a recording tape guide roller or the like can be provided. Ma
In addition, it is difficult for the user to intentionally open and close the shielding member. Furthermore, the shielding member changes its direction.
In a recording tape cartridge
When opening and closing the mouth, any part of the shielding member (e.g.
First guide means for guiding the raising portion) along the loading direction.
(For example, a guide groove into which the protrusion enters) and the shielding member
A part different from the above arbitrary part (for example, a protrusion)
Linear or guided around any part
Curved second guide means, for example, a guide into which the protrusion enters
A groove). In this configuration, the shielding members are the first and second members.
Guided by the guide means between the closed position and open position of the opening
(Turning continuously or intermittently)
E) Move and secure without protruding from the outer area of the case
The opening can be opened and closed. In particular, a case where the shielding members are arranged when the opening is opened.
The first guide means provided along the side wall of the shield member
The rear end portion as the arbitrary part is guided, and the shielding member
The vicinity of the front end provided with the contact portion is the second guide means.
If the structure is guided, the shielding member is wasted with a simple structure.
It is preferable that it can move while rotating. In addition, at the closed side end of the second guide means,
Inclination direction with respect to the loading direction of the mouth (assumed user
Bending part in the direction that intersects the direction of shielding member operation
If the structure is provided, the shielding member is operated by the user
In this case, the opening cannot be moved and the closed state of the opening is maintained. like this
Simple locking means without increasing the number of parts.
Can be made. Furthermore, the second guide means and the second guide hand
The pressure angle with the part of the shielding member guided to the step is from 15 °
If set within the range of 60 °, the shielding member will work smoothly.
It is suitable for movement. Furthermore, the shielding member is arranged in the closing direction of the opening.
For example, if a biasing means for biasing is provided, for example, a driver
The Eve device releases the contact state with the contact portion of the opening and closing member.
Then, the opening can be closed and the structure is simplified. Also this
Proposed by the second guide means of the shielding member by the urging means
Can be positioned to the bent part
The reliability of the simple locking means is improved. DESCRIPTION OF THE PREFERRED EMBODIMENTS A recording tape according to an embodiment of the present invention.
The tape cartridge 10 is based on FIG. 1 to FIG.
And explain. First, an outline of the recording tape cartridge 10
The overall structure of the abbreviated structure will be described, and then the main part of the present invention
Door 20 and door as shielding member for opening and closing opening 20
30 will be described. For convenience of explanation, an arrow A
Of the recording tape cartridge 10 shown in FIG.
The filling direction is the front (front side) of the recording tape cartridge 10
The arrow B direction orthogonal to the arrow A is the right direction. (Overall structure of recording tape cartridge)
As shown in the exploded perspective view, the recording tape cartridge 1
0 is an information recording / re-recording in the case 12 having a substantially rectangular shape in plan view.
Wraps magnetic tape T as a recording tape that is a raw medium
The single reel 14 is rotatably accommodated.
The Case 12 is loaded in the drive device.
Whether the front right corner, which is one corner on the front side, is notched
A pair of upper case 16 and lower case 18 are connected to each other's peripheral walls.
16A, 18A
The reel 14 having the magnetic tape T wound therein is accommodated.
A space is provided. And the upper case 16 and the lower
The corner portions 16A and 18A of the case 18 are cut off.
An opening 20 for drawing out the magnetic tape T is provided. Magnetic tape drawn out from the opening 20
At the free end of T, there is a chucking mechanism 22 of the drive device.
Pull out while being locked (engaged) by (see Fig. 4)
A leader pin 24 to be operated is connected. leader
Both ends of the pin 24 projecting from the end in the width direction of the magnetic tape T
An annular groove 24A is formed in the portion, and this annular groove 2
4A is locked to the hook 22A of the chucking mechanism 22.
The As a result, when pulling out the magnetic tape T, the hook
22A is in contact with the magnetic tape T and is not damaged.
The In addition, inside the opening 20 of the case 12,
Position and hold the leader pin 24 in the case 12
A pair of upper and lower pin bases 26 are provided (upper case
(The 16-side pin base is not shown). The pin base 26 is semi-cylindrical.
The reader is in a state of being upright in the recess 26A.
Both ends of the pin 24 are held. And the pin base 26
The magnetic tape T drawer side of the outer peripheral wall is open, and the lead
It is an entrance to and from which Dapin 24 enters and exits. In addition, the center of the lower case 18 has a lead.
For exposing a reel gear (not shown) of
A gear opening 18B is provided, and the reel 14 is a reel.
Case 1 is engaged with the gear of the drive device.
2 is driven to rotate. Also reel
14 on the inner surfaces of the upper case 16 and the lower case 18, respectively.
This is a partially protruding circular shape coaxial with the gear opening 18B.
Avoid looseness due to the floating regulation wall 19 on the trajectory.
Is held in. (Configuration of the opening) As shown in FIGS.
0 is the loading side of the case 12 to the drive device as described above
The corners are notched so that the open surface
Since it faces in the direction of mark A and arrow B,
The jacking mechanism 22 is in the direction of arrow A, arrow B, or
Is accessed from between arrow A direction and arrow B direction
The pin 24 can be chucked. Thus, the leader pin 24 is held.
The area where the pin base 26 can be installed widens. That is, Dora
The chucking mechanism 22 of the Eve device clamps the leader pin 24.
The possible area that can be
According to the specifications of the drive device that chucks from the direction of arrow B
Thus, the installation position of the pin base 26 can be set. For this reason,
The degree of freedom in designing live equipment is also expanded. The edge of the opening 20, that is, the upper case
16 and lower peripheral walls 16A, 18 of the lower case 18
Screw bosses 28 are formed at the end portions of A.
The Screw screw (not shown) from the bottom to this screw boss 28
The upper case 16 and the lower case 18 are fixed (contacted)
) Thereby, the freedom of the peripheral walls 16A and 18A.
Specified by the edge, disadvantageous in strength, etc.
The corners at both ends of the opening 20 that easily collide with the
The total weight of the recording tape cartridge 10 even if 2 is dropped
Thus, it is configured to be deformed or buckled and not misaligned. As an example, the screw thread diameter of the screw is φ
2.0 mm and the outer diameter of the screw boss 28 is φ4.0 mm
ing. Further, instead of the screw, it corresponds to the screw boss 28.
Projecting from the upper case 16 at the position and lower case
18 is provided with a fitting hole for fitting with the protrusion, and the protrusion and the fitting hole are provided.
They may be fitted together, but in this case, the radius of the fitting part
Upper case 16 and lower case 1 at locations within 30 mm
8 is preferably screwed. Furthermore, the peripheral wall 16
A and 18A mating surfaces (corners on both sides of opening 20)
May be fixed by welding. The area where the pin base 26 is installed (open).
In the vicinity of the mouth 20), the thickness of the upper case 16 and the lower case 1
Both 8 are 2mm and are thicker than other areas.
ing. Furthermore, the case 12 (the upper case 16 and the lower case
18) is made of polycarbonate material (PC)
Yes. A first guide groove 40, which will be described later, of the case 12,
The thickness of the bottom portion of the second guide groove 42 is 0.5 mm to 1
mm. This is because the recording tape cartridge 10 has a function.
The most important in performance (when pulling out the magnetic tape T
Leader pin 2 (should be properly locked to the king mechanism 22)
Intensity near the pin base 26 that is the holding (positioning) position 4
To prevent misalignment due to impact caused by dropping, etc.
It is to do. Then, in the direction of arrow A on the open surface of the opening 20
The inclination angle with respect to the recording tape cartridge
Determined according to the requirements for identification (recognition) of the cartridge 10
ing. That is, the library apparatus has a plurality of recording tables.
Recording tape cartridge containing the cartridge 10
10 drive device automatically (without human intervention)
The recording tape car that handles it.
When there are multiple types of cartridges 10 and drive devices,
Recognize recording tape cartridge generation, recording capacity, etc.
It is necessary to determine the inclination angle of the open surface of the opening 20 for this recognition.
Can be used. As a result, due to the strength considerations as described above,
The opening 20 for drawing out the magnetic tape T is opened.
The angle of inclination of the surface (specifically, the ceiling that defines the top and bottom of the opening 20)
(Inclination angle of plate or bottom plate)
In order to serve also as a recognition unit, the opening 20 and the recognition unit are provided separately.
Case (for example, one or more cases 12 as a recognition unit)
Case 12 is a concern when a large number of through holes are provided)
Prevent inadequate temperature, reduced dustproofness, and complicated mold structure
Yes. (Door Configuration) The opening 20 described above is a shielding member.
The door 30 is opened and closed. The door 30 is a rectangular flat
It is formed in a plate shape and its width (height) is the opening height of the opening 20
And the length of the plate is the opening of the opening 20.
It is larger than the width. That is, the door 30 is opened.
The mouth 20 is formed so that it can be closed. The door 30 has one end in the longitudinal direction.
Whether the pair of upper and lower guide pins 32 are both ends in the width direction.
And a pair of upper and lower guides at the other end in the longitudinal direction.
Dopins 34 are projected from both ends in the width direction.
The Further, the door 30 is provided with the guide pin 32.
The abutting portion 36 having a triangular shape in plan view is formed in the width direction on the outer surface of the end portion
Extending over the
A groove 38 is provided. The door 30 is a case 1 made of a PC.
2 has excellent wear resistance and low friction coefficient, for example
For example, with polyoxymethylene (POM) resin
Molded. The guide pins 32 and 34 are connected to the door 3.
It may be formed separately from the zero body, in which case the poly
Amide (PA), polytetrafluoroethylene (PTF)
E), resin materials such as polyethylene (PE) or metal materials,
Alternatively, it may be composed of a material mainly composed of these.
Yes. On the other hand, the case 12 is replaced with acrylonitrile instead of PC.
Butadiate styrene (ABS) or metal
Yes, but if the case 12 is made of a metal material, it will wear out.
Considering the characteristics and prevention of abnormal noise, guide pins 32 and 34
It is necessary to configure with a fat material. This door 30 is provided in the case 12.
The position where the opening 20 is closed by the guide means, and the opening
It is possible to move between positions where 20 is opened. Specifically, as shown in FIGS.
Along the arrow A direction of the upper case 16 and the lower case 18
In the vicinity of the peripheral walls 16A and 18A, they are opposed to each other.
A pair of upper and lower first guide grooves 40 are provided along the direction of arrow A.
It is The first guide groove 40 has a base end on the rear side.
It is slightly behind the screw boss 28 and its length is
It is formed slightly shorter than the plate length of the door 30. Top and bottom
One guide groove 40 is formed inside each guide pin of the door 30.
34 is inserted to move the guide pin 34 in its longitudinal direction.
It is the structure guided along. On the other hand, the upper case 16 and the lower case 18 are opened.
Between the edge of the mouth 20 and the pin base 26, a pair of
A pair of upper and lower sides inclined at a predetermined angle and arranged opposite to each other
A second guide groove 42 is provided. Second guide groove 42
The base end and the end are the vicinity of the front and rear screw bosses 28.
And the length is slightly shorter than the plate length of the door 30
It is made. Each of the second guide grooves 42 has an inner
The guide pin 32 of the door 30 is inserted into the guide pin,
While rotating the guide 32 around the guide pin 34
It is the structure guided along a direction. As a result, the door 30 is guided to the guide pin 32.
Is located at the front end of the second guide groove 42 and a guide pin
34 is located at the front end of the first guide groove 40,
The part contacts the front screw boss 28 and the other end is the first
Open by contacting the peripheral walls 16A and 18A near the guide groove 40
20 is closed from the inside (FIGS. 5 and 8).
(See (A)). Further, the door 30 is shown in FIGS. 6 and 8B.
As shown, the guide pins 32 and 34 respectively
Guided by the first guide groove 40 and the second guide groove 42
Do not rotate clockwise around the guide pin 34 in plan view.
The guide pin 32 moves to the rear side and the second guide groove 42
The guide pin 34 is located at the rear end of the first guide groove
40 in a state of being located at the rear end of 40
Lined up in parallel and housed in case 12, opening 20 opened
(See FIGS. 7 and 8C). In this state, the contact portion 3 of the door 30
Pull the 6 side end so that it touches the rear screw boss 28
Projecting forward from the normal n of the open surface (edge) of the open opening 20
The end position of the second guide groove 42 is determined so as not to
ing. Thereby, the door 3 in the open position of the opening 20
0 will not disturb the approach of the chucking mechanism 22
ing. Further, the second guide groove 42 faces the direction of arrow A.
The inclination angle is determined by the operational requirements of the door 30.
In this embodiment, the recognition unit is used as described above.
Open surface of opening 20 determined by functional requirements
Does not coincide with the inclination angle with respect to the direction of arrow A. Snow
That is, in the present embodiment, the opening surface of the opening 20 and the second guide
The groove 42 is not parallel. The opening 20
As a result, the open surface and the second guide groove 42 become parallel.
Needless to say. In the present embodiment, the second guide groove 4
2 at the rear end of the case 12 rather than the front end of the first guide groove 40.
By placing inward (opposite the direction of arrow B), the opening
20, the second guide groove 42 is exposed to the outside.
It is designed not to be issued. In other words, the second guide
The groove 42 is formed inside the door 30 at the closed position of the opening 20.
Formed when the magnetic tape T is not in use (for storage and
(During transport) the dust and dust do not accumulate inside
The Further, the door 30 is smoothly operated.
For this purpose, each guide pin 32, 34 and the first guide groove 40,
The clearance with the second guide groove 42 (width direction) is
Assuming that the center line of the
0.4mm (0.1mm to 0.8mm on both sides)
Degree is preferable, especially when 0.2 mm,
It is suitable for smooth operation while preventing sticking. Ma
The upper and lower end surfaces of the door 30 and the inner surface of the case 12 (top plate and
Clearance from the base plate) from 0.05mm on one side
About 0.2 mm is preferable. Furthermore, at the front end of the second guide groove 42,
Has a bent portion 44 bent outward in the longitudinal direction.
Is formed. Bending portion 44 is formed along arrow A direction
In a state in which the door 30 closes the opening 20, it will be described later.
Due to the urging force of the leaf spring 46, the door 30
A guide pin 32 is inserted. Thereby, the opening 20 is closed by the door 30.
In the closed state, the user opens the door 30 (contact portion 36) 2
Even if it tries to operate in the direction of the open surface of 0, the guide pin 32
Is caught by the bent portion 44 (the guide pin 32 and the bent portion 44
The frictional resistance of the guide pin 32 moves along the bent portion 44.
Easily greater than the component force in the direction of movement)
It has a simple lock structure that does not open 0. In this embodiment, the bent portion 44 is an arrow.
The bent portion 44 is formed along the direction of the mark A.
2 The inclination angle with respect to the longitudinal direction of the guide groove 42 is from 50 °.
Can be set to any value between 150 °
It can also be formed. Further, the door 30 is a plate as an urging means.
Is biased in the closing direction of the opening 20 by the screw 46
The One end of the leaf spring 46 is a spring hook groove of the door 30.
38, and the other end is the inner surface of the case 12.
It is latched by the latching | locking part 48 which protruded. Locking portion 48
Is a floating guide cut out in the vicinity of the front end of the first guide groove 40.
Located substantially in front of the control wall 19, from the center of the gear opening 18B
Is far from the inner surface of the floating regulation wall 19
The reel 14 and the leader pin 24
Interference with is prevented. By the biasing force of the leaf spring 46, the door 3
0 is normally located at the closed position of the opening 20
Yes. That is, the door 3 is biased by the urging force of the leaf spring 46.
The zero guide pin 32 is in the bent portion 44 of the second guide groove 42.
The guide pin 34 is inserted into the first guide groove 40
It is located at the front end. On the other hand, when the opening 20 is opened, the door 3
0 contact portion 36 is provided on the drive device side, which will be described later.
Abutting on the picking portion 50A of the door opening / closing arm 50,
When the case 12 is inserted, the door 30 is bent to the bent portion 44.
Along the opening force. With this opening force,
The street door 30 is connected to the first guide by the guide pins 32 and 34.
While being guided by the groove 40 and the second guide groove 42
It is a configuration that moves. Next, the operation of this embodiment will be described with reference to FIG.
This will be described with reference to FIG. With the recording tape cartridge 10 configured as described above,
When not in use (during storage or transportation), the opening 20
It is blocked from the inside by the door 30. In this state,
The guide pin 32 of the door 30 is biased by the leaf spring 46.
To easily enter the bent portion 44 of the second guide groove 42.
It is easily locked. That is, the user moves the door 30 (contact portion 3).
6) If you try to move it along the open surface of the opening 20,
When the id pin 32 engages with the groove wall of the bent portion 44, the door 30
It does n’t move. For this reason, the opening 20 maintains its closed state.
And will not be released by the user's will. On the other hand, when using the magnetic tape T,
The recording tape cartridge 10 is dried along the direction of arrow A.
Load into the device. Along with this loading, FIG. 9 and FIG.
As shown in the upper part of the bucket 52 of the drive device
Picking of door opening / closing arm 50 supported to be swingable
The portion 50 </ b> A contacts the contact portion 36 of the door 30. Recording tape cartridge 10 (case 1
When 2) is pushed further into the bucket,
Therefore, as shown in FIG.
The picking unit 50A is rotated while rotating clockwise in plan view.
Opening the opening 20 with the door 30 (contact portion 36) that makes contact
Slide in the direction. That is, the door 30 is the first guide
The guide pin 3 is guided by the groove 40 and the second guide groove 42.
Moves substantially backward while rotating around 4 times. Then, as shown in FIG.
The right front corner where the two openings 20 are formed is the bucket 52
When it hits the topper 54, the opening 20 is completely opened.
The In this state, the door 30 is rotated around the direction of the arrow A.
Stored in case 12 alongside walls 16A and 18A.
Is done. The case 12 has an inclined corner portion.
It hits the stopper 54 having an inclined surface corresponding to this
The loading depth in the direction of arrow A with respect to the bucket 52
And the position in the arrow B direction are also restricted. This
In this state, the bucket 52 is lowered and the recording tape cartridge is
The gear 10 is aligned in the vertical and horizontal directions within the drive device.
Positioned accurately. Further, along with this lowering, the reel 14 has a lead.
The drive gear (not shown) of the drive device meshes with the gear gear.
As a result, the reel 14 can be driven to rotate. And
From the opened opening 20, the chucking mechanism 22
The hook 22A enters the case 12, and this hook 2
Leader pin 24 with 2A positioned and held on pin base 26
Lock. Chucking machine with leader pin 24 locked
The structure 22 is obtained by extracting the leader pin 24 from the case 12.
The magnetic tape T is pulled out from the case 12. In addition,
The rocking mechanism 22 is a magnetic tape along a predetermined tape path.
While pulling out the loop T, unwind the leader pin 24.
The leader pin 24 is guided to the hub of the reel and the leader pin 24 is hooked 2
It is accommodated and held in the accommodating part of the hub together with 2A. In this state, the reel 14 and the take-up reel are
As a result, the magnetic tape T can be wound.
Information is recorded or wound while being sequentially wound around the take-up reel hub.
Information is played back. When the magnetic tape T is rewound, the reel 1
4 and the take-up reel are driven in reverse rotation. Magnetic tape T
When it is completely rewound, the chucking mechanism 22
The pin 24 is held on the pin base 26. This chucking
When mechanism 22 comes out of opening 20, bucket 52
The recording tape cartridge 10 (case 12) is raised
The placement state is released. In this state, the recording tape cartridge 10
Is an urging force of an unillustrated ejection mechanism or leaf spring 46
The door 3 is moved in the direction opposite to the direction of arrow A by the force.
0 is the closing direction of the opening 20 by the urging force of the leaf spring 46
The picking portion 5 at the contact portion 36
The door opening / closing arm 50 with which 0A abuts is counterclockwise in plan view
Turn to. Also at this time, the door 30 remains in the first guide groove 4.
Guide pin 34 is guided around 0 and the second guide groove 42
It moves almost forward while rotating in a straight line. Door 30 is open 20
When the door is opened, the door opener
The recording tape to be loaded next time after returning to the initial position.
The cartridge 10 is accepted. Here, the opening 20 has a rectangular case 12.
Since the loading side corner of the
The release surface faces in the direction of arrow A and arrow B (open surface
Is inclined with respect to the direction of arrow A). In other words,
The chucking mechanism 22 of the live device is the arrow on the case 12
Access to the leader pin 24 from the front side facing the A direction
Outside the peripheral wall (side wall) 16A, 18A on the arrow B side
There is no need to access from (arrow B side). For this reason, in the drive device, a magnetic tape
The route for extracting T can be minimized, and check
The winding mechanism 22 turns around from the arrow B side of the case 12
Unnecessary drive mechanism, miniaturization and cost reduction
Figured. The door 30 has a first guide groove 40 and a first guide groove 40.
2 guided by the guide groove 42,
Then, the opening 20 having the inclined open surface is closed from the inside.
And the peripheral walls 16A, 18A on the arrow B side of the case 12
Between the position where the opening 20 is opened in parallel with each other.
The outer side of the tool 14 and the leader pin 24 (pin base 26).
Move backwards or forwards while rotating around
The For this reason, the door 30 opens and closes the opening 20.
In the process (including open and closed)
It does not protrude from the outer area (notch of case 12
The drive device does not protrude into the corners)
There is no need to secure an opening / closing space for the door 30. Snow
That is, the recording tape cartridge 1 in the drive device
0 storage space is small. Also, the opening 2 of the case 12
In the drive device corresponding to the notch where 0 is formed
In the space, components on the drive device side (for example, recording tape)
A roller for guiding the loop). In addition, door 3
0 is guided by the first guide groove 40 and the second guide groove 42.
It operates without waste.
There is no interference with the solder pin 24 (pin base 26). Further, the door opening / closing arm 5 of the drive device.
0 is simply a recording tape cartridge 10 (case 12)
The picking unit
50A is in contact with the contact portion 36 while the door 30 is
Since it is operated in the opening direction, the structure is simple. In particular,
A contact portion 36 is provided at one end which is the front end when the door 30 is assembled.
In other words, the contact portion 36 has the opening 2.
Position of the door 30 facing the outside from the opening 20 in the open state of 0
The door opening / closing arm 50 is simply a bar.
The opening 20 is simply supported by the bracket 52 so as to be swingable.
The contact portion 36 of the door 30 that changes its posture in the opening process.
Can be followed. In this way, the recording table according to the present embodiment.
In the cartridge 10, the magnetic tape T pull-out path
The recording tape cart is provided with an opening 20 having a structure capable of minimizing the length of the recording tape cart.
Reducing the storage space of the ridge 10 drive device
Door 30 interferes with reel 14 and leader pin 24
Can be opened and closed without any problem, and the door 30 can be operated to open the opening 20
Door opening and closing arm 50 as an opening and closing means for opening and closing
Structure. Further, the magnetic tape T is pulled out as described above.
The path for the magnetic tape T
Since it is inevitably shortened, magnetic tape T and tape guide
(E.g., a roller that is rotatably supported)
Wear can be reduced. Further, the opening 20 cuts the corner of the case 12.
In order to be formed in the direction of arrow A and arrow B,
Leader pin 2 of chucking mechanism 22 (hook 22A)
The range of access directions to 4 is widened,
The position where the leader pin 24 can be installed widens. And
As described above, the movement locus of the door 30 is that of the leader pin 24.
Since it does not interfere with the actual installable position,
The design freedom of the device is improved. Furthermore, the door 30 is removed from the case 12.
Since it is a separate member from the leader pin 24 to be pulled out,
Guide pins 32, 34, first guide groove 40, second guide
A configuration in which the groove 42 cannot be removed from the case 12;
It has become. That is, the door 30 is a recording tape cart.
Case 1 due to impact or the like when the ridge 10 is dropped
2 is not easily removed. Meanwhile, the leader pin 24
Is opened by the door 30 when the magnetic tape T is not used.
Housed in a sealed case 12 with the mouth 20 closed.
It is hard to get scratches and dirt. For this reason, the drive
Affects pulling out and running of magnetic tape T
In addition, the magnetic tape T itself is not damaged. Also open
The door 30 that closes the mouth 20 from the inside is determined by the user.
It is difficult to operate. As described above, the second guide groove 42 is simply used.
Bending the front end of the
Without adding, the door 30 can be easily closed at the closing position of the opening 20.
Easy to lock. That is, increase the number of parts
Production efficiency (formability, workability, assembly, parts management
Easy to use) with low cost and high reliability
Is realized. Further, the door 30 is moved in the closing direction of the opening 20.
Since the leaf spring 46 for biasing is provided, the drive device is a door.
No need for a mechanism to operate 30 in the closing direction of the opening 20
Is further simplified, and the biasing force of the leaf spring 46
The guide pin 32 of the door 30 surely enters the bent portion 44.
The simple locking means functions reliably. In the above embodiment, the door 30
Second guide groove (cam) for restricting rotation around guide pin 34
(Groove) 42 is formed in a straight line, but the present invention
For example, instead of the second guide groove 42, the present invention is not limited to this.
FIG. 13 (illustration of the leaf spring 46 is omitted)
The second guide groove 60 as described above may be provided. The second guide groove 60 is located behind the bent portion 44.
The inclination angle of the provided first inclined portion 62 with respect to the arrow A direction
θ1 is the second provided further rearward of the first inclined portion 62.
The inclination angle 64 is smaller than the inclination angle θ2 with respect to the arrow A direction.
It is formed in a generally “<” shape in plan view. In this configuration, the second guide of the guide pin 32 is used.
The pressure angle with respect to the groove 60 is smaller than that of the above embodiment.
I can. That is, the pressure angle α is determined by the guide pin 32
2 Contact point in contact with guide groove 60 and rotation of guide pin 32
An imaginary line connecting the axis of the guide pin 34 that is the center, and the top
Determined by the angle between the contact point and the normal line of the second guide groove 60
Generally, a range of 15 ° to 60 ° is preferable.
However, in this modification, the maximum value of the pressure angle α is set to 55 °.
To keep the door 30 running more smoothly
Yes. Note that the second inclined portion 64 of the second guide groove 60 is provided.
The both groove walls in the width direction correspond to the corresponding groove walls of the first inclined portion 62.
Each may be formed in a circular arc shape that is a tangent line. Further, in the above embodiment, the door 30 is provided.
Leaf spring as urging means for urging the opening 20 in the closing direction
46 is provided, but the present invention is not limited to this.
For example, as shown in FIG. 14 and FIG.
As a configuration provided with a torsion spring 70 instead of 46
good. In this configuration, the toe is opened and closed during the opening / closing process.
Eliminates the force that the spring 70 pushes the door 30 outward
For this purpose, the central lower end of the door 30 is cut over the entire thickness.
A missing spring receiving portion 72 is provided, and the tip of the torsion spring 70 is provided.
The end can pass through the door 30 to escape.
The tip of the torsion spring 70 is connected to the case 12 (lower
The peripheral wall 18A is flat so as not to interfere with the case 18).
A viewing arc-shaped escape groove 74 is formed. In this configuration
Therefore, it is said that it works similarly to the above embodiment.
Needless to say. Furthermore, in the above embodiment, the first guide
Structure in which the groove 40 and the second guide groove 42 are provided separately.
However, the present invention is not limited to this, and the first guide groove 4
0 and the second guide groove 42 are connected to each other.
Also good. Furthermore, in the above embodiment, recording is performed.
Although the configuration using magnetic tape T as the tape,
The recording tape is not limited to this, and the recording tape records and records information.
Long tape-like information recording / playback that enables playback of recorded information
It is sufficient if it can be grasped as a medium, and according to the present invention.
Recording tape cartridges can be recorded in any recording / reproducing system
Needless to say, it is also applicable to tape. As described above, the recording according to the present invention.
The tape cartridge should be the
An opening with a configuration that can be shortened is accommodated in the storage space in the drive unit.
A shielding member that can reduce the size of the
It can be opened and closed without interference, and it can be opened by operating the shielding member.
The opening and closing means on the drive device side that opens and closes the door has a simple structure.
It has an excellent effect of being able to

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing an overall configuration of a recording tape cartridge according to an embodiment of the present invention. FIG. 2 is a perspective view showing a closed state of the opening constituting the recording tape cartridge according to the embodiment of the present invention by a door. FIG. 3 is a perspective view showing the opening or closing of the opening constituting the recording tape cartridge according to the embodiment of the invention. FIG. 4 is a perspective view showing an open state of an opening constituting the recording tape cartridge according to the embodiment of the invention. FIG. 5 is a plan view of the recording tape cartridge according to the embodiment of the present invention with the upper case showing a closed state by the door of the recording tape cartridge removed. FIG. 6 is a plan view of the recording tape cartridge according to the embodiment of the present invention with the upper case showing the opening or closing of the opening constituting the recording tape cartridge removed. FIG. 7 is a plan view of the recording tape cartridge according to the embodiment of the present invention with the upper case showing an opened state of the recording tape cartridge removed. 8A is a perspective view of the recording tape cartridge according to the embodiment of the present invention, with the upper case showing the opening process of the opening removed, and FIG. 8A is a perspective view of the opening in a closed state; ) Is a perspective view in the middle of opening or closing the opening,
(C) is a perspective view of the closed state of the opening. FIG. 9 is a perspective view showing the relationship between the recording tape cartridge and the door opening / closing arm of the drive device according to the embodiment of the present invention. FIG. 10 is a plan view showing a state in which the door constituting the recording tape cartridge according to the embodiment of the invention is operated by the door opening / closing arm of the drive device. FIG. 11 is a plan view showing a state in which the door constituting the recording tape cartridge according to the embodiment of the invention is operated by the door opening / closing arm of the drive device. FIG. 12 is a plan view showing a state in which the door constituting the recording tape cartridge according to the embodiment of the invention is operated by the door opening / closing arm of the drive device. 13A is a plan view of a modified example of the second guide groove constituting the recording tape cartridge according to the embodiment of the present invention, with the upper case removed, and FIG. 13A is a plan view of the opening in a closed state; (B) is a plan view in the middle of opening or closing the opening, (C) is a plan view in the closed state of the opening. 14 is a perspective view of the recording tape cartridge according to the embodiment of the present invention, with the upper case removed, showing a modification of the urging means constituting the recording tape cartridge. FIG. FIG. 15 is a view of a modification of the urging means constituting the recording tape cartridge according to the embodiment of the present invention, with the upper case removed, (A) being a plan view of the closed state of the opening; (B) is a plan view in the middle of opening or closing the opening;
(C) is a plan view of the closed state of the opening. FIG. 16 is a perspective view showing an overall configuration of a conventional recording tape cartridge. FIG. 17 is a perspective view showing an overall configuration of a conventional recording tape cartridge. FIG. 18 is a perspective view showing an overall configuration of a conventional recording tape cartridge. [Description of Symbols] 10 Recording tape cartridge 12 Case 14 Reel 20 Opening 24 Leader pin (leader member) 30 Door (shielding member) 40 First guide groove (guide means) 42 Second guide groove (guide means) 46 Leaf spring (attached) Urging means) 60 second guide groove (guiding means) 70 torsion spring (urging means)

Claims (1)

Claims: 1. A rectangular case that rotatably accommodates a single reel on which a recording tape is wound, and a corner portion on the side where the case is loaded into a drive device is cut out. An opening for pulling out a leader member attached to an end of the recording tape; and provided in the case, and the opening is closed from the inside when the recording tape is not used, and when the recording tape is used. A recording tape cartridge comprising: a shielding member that opens in parallel to the side wall of the case and opens the opening.